Ask Question
ChemistryChemistry
14 July, 21:23

The change in enthalpy is the change in heat energy of a reaction and is calculated by (Hint: Hess' Law) : Group of answer choices

a. Sum of reactant enthalpies plus the sum of product enthalpies

b. Sum of reactant enthalpies minus the sum of product enthalpies

c. Sum of product enthalpies times the sum of reactant enthalpies

d. Sum of product enthalpies minus the sum of reactant enthalpies

+5
Answers (1)
  1. 14 July, 23:36
    0
    d. Sum of product enthalpies minus the sum of reactant enthalpies

    Explanation:

    The standard enthalpy change of a reaction (ΔH°rxn) can be calculated using the following expression:

    ΔH°rxn = ∑n (products) * ΔH°f (products) - ∑n (reactants) * ΔH°f (reactants)

    where,

    ni are the moles of products and reactants

    ΔH°f (i) are the standard enthalpies of formation of products and reactants
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “The change in enthalpy is the change in heat energy of a reaction and is calculated by (Hint: Hess' Law) : Group of answer choices a. Sum ...” in 📘 Chemistry if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers
You Might be Interested in
When the following reaction is balanced with the lowest possible whole number coefficients, what is the coefficient in front of the potassium chloride (KCl) ? K2CO3 + FeCl3 yields KCl + Fe2 (CO3) 3 8 6<? 4 3
Answers (2)
What is the main reason there is more variation between N, P, As, Sb, and Bi? they are in different periods there are varying classifications of material different number of valence electrons increased number of subshells going down group
Answers (1)
What is the rate of a reaction if the value of k is 3 and A and B are each 2 M Rate kA2B?
Answers (1)
Suppose a researcher calculates the dissociation constant of the binding between two immunoglobulin G (IgG) antibodies, IgG‑1 and IgG‑2, and several antigens.
Answers (1)
What can be explained by the Arrhenius theory?
Answers (1)
New Questions in Chemistry
Given the generic chemical reaction below write the rate of the reaction
Answers (1)
23 For a reaction at equilibrium, which change can increase the rates of the forward and reverse reactions?
Answers (1)
If the formula for potassium chlorate is KClO3 and the formula for magnesium fluoride is MgF2, then what isthe formula for magnesium chlorate?
Answers (1)
How can you tell if a chemical reaction has occurred?
Answers (1)
An engineering team is conducting a trial launch of a new rocket. Which part of the engineering process is the team in?
Answers (1)
Home » Chemistry » The change in enthalpy is the change in heat energy of a reaction and is calculated by (Hint: Hess' Law) : Group of answer choices a. Sum of reactant enthalpies plus the sum of product enthalpies b.
Sign Up Forgot Password?